NASA Scientific and Technical Aerospace Reports

20040074303 Cologne Univ., Germany
Heterodyne Array Receiver Development at KOSMA
Heyminck, S.; Graf, U. U.; Michael, E. A.; Stanko, S.; Rabanus, D.; Honingh, C. E.; Jacobs, K.; Schieder, R.; Stutzki, J.; New
Concepts for Far-Infrared and Submillimeter Space Astronomy; April 2004, pp. 359-369; In English; See also 20040074260
Contract(s)/Grant(s): DFG-SFB-494; BMBF-05-AH9PK1; No Copyright; Avail: CASI; A03, Hardcopy
We present an overview of the array receiver development in the KOSMA receiver group. The central topic of the
presentation is the 16 element 40/810 GHz array SMART (SubMillimeter Array Receiver for Two frequencies), which has
been installed at the KOSMA telescope on Gornergrat near Zermatt/Switzerland in September of 2001. The opto-mechanical
design of this receiver makes intensive use of our CNC machining capabilities, both to produce special optical components
like imaging phase gratings for LO multiplexing, and also to manufacture relatively large receiver sub-assemblies as
monolithic integrated optics blocks. We use our standard waveguide SIS mixers as detectors and the KOSMA Array-AOS as
backends. We give a short presentation of the receiver design and show results obtained with the instrument during its first
astronomical observing season. Based on the good experience with SMART, we are using a similar approach for the design
of STAR (SOFIA Terahertz Array Receiver), a 16 element 1.9 THz hot electron bolometer array, which we are currently
developing.
Author
Heterodyning; Arrays; Receivers
20040074309 Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, USA
BLAST: The Balloon-Borne Large Aperture Submillimeter Telescope
Devlin, Mark; Ade, Peter; Bock, Jamie; Dicker, Simon; Griffin, Matt; Gunderson, Josh; Halpern, Mark; Hargrave, Peter;
Hughes, David; Klein, Jeff, et al.; New Concepts for Far-Infrared and Submillimeter Space Astronomy; April 2004,
pp. 317-322; In English; See also 20040074260
Contract(s)/Grant(s): NRA-99-01-SPA-015; No Copyright; Avail: CASI; A02, Hardcopy
BLAST is the Balloon-borne Large-Aperture Sub-millimeter Telescope. It will fly from a Long Duration Balloon (LDB)
platform from Antarctica. The telescope design incorporates a2mprimary mirror with large-format bolometer arrays
operating at 250, 350 and 500 microns. By providing the first sensitive large-area (10 sq. deg.) sub-mm surveys at these
wavelengths, BLAST will address some of the most important galactic and cosmological questions regarding the formation
and evolution of stars, galaxies and clusters. Galactic and extragalactic BLAST surveys will: (1) identify large numbers of
high-redshift galaxies; (2) measure photometric redshifts, rest-frame FIR luminosities and star formation rates thereby
constraining the evolutionary history of the galaxies that produce the FIR and sub-mm background; (3) measure cold
pre-stellar sources associated with the earliest stages of star and planet formation; (4) make high-resolution maps of diffuse
galactic emission over a wide range of galactic latitudes. In addition to achieving the above scientific goals, the exciting legacy
of the BLAST LDB experiment will be a catalogue of 3000-5000 extragalactic sub-mm sources and a 100 sq. deg. sub-mm
galactic plane survey. Multi-frequency follow-up observations from SIRTF, ASTRO-F, and Herschel, together with
spectroscopic observations and sub-arcsecond imaging from ALMA are essential to understand the physical nature of the
BLAST sources.
Author
Balloon-Borne Instruments; Bolometers; Galactic Evolution; Imaging Techniques; Telescopes
20040074317 UK Astronomy Technology Centre, UK
Detector Technology for SCUBA-2: The New Generation Submillimeter Imager for the JCMT
Duncan, W. D.; Holland, W. S.; Audley, M. D.; Kelly, B. D.; Gostick, D.; Peacocke, P. T.; MacIntosh, M. J.; Hodson, T.; Irwin,
K. D.; Hilton, G., et al.; New Concepts for Far-Infrared and Submillimeter Space Astronomy; April 2004, pp. 295-300; In
English; See also 20040074260; No Copyright; Avail: CASI; A02, Hardcopy
The contents include the following: 1. New Detector Technologies. Transition Edge sensors. Pixel modelling. Monolithic
arrays. 2. Thermal conductance of the pixel. Multiplexed SQUID Readout. 3. Dark SQUID experiment. 4. SCUBA 2
instrument - 4K and 1K optics and array modules.
CASI
Detectors; Technology Assessment; Submillimeter Waves
20040074318 California Univ., Berkeley, CA, USA
Future Far Infrared/Submillimeter Direct Detectors
Richards, P. L.; New Concepts for Far-Infrared and Submillimeter Space Astronomy; April 2004, pp. 325-328; In English;
See also 20040074260; No Copyright; Avail: CASI; A01, Hardcopy
115